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This map of Mars indicates locations of new craters that have excavated ice (blue) and those that have not (red). The underlying map is based on the brightness, or albedo, of the Martian surface.
Locations of Ice-Exposing Fresh Craters on Mars
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A meteorite impact that excavated this crater on Mars exposed bright ice that had been hidden just beneath the surface at this location.
Fresh Crater Exposing Buried Ice on Mid-Latitude Mars
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This pair of maps indicates locations of confirmed sites of recurrent slope linea on Mars, with respect to elevation (upper map) and surface brightness, or albedo (lower map).
Maps of Recurrent Slope Linea Markings on Mars
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These images from the High Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars Reconnaissance Orbiter show how the appearance of dark markings on Martian slope changes with the seasons.
Seasonal Changes in Dark Marks on an Equatorial Martian Slope
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This image includes an especially long example of a type of dark marking that advances down some Martian slopes in warmer months and fades away in cooler months.
Long, Recurring Linear Marking on Martian Slope
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This set of drawings depicts cross sections of the "Yellowknife Bay" area of Mars' Gale Crater at three points in time going back more than 80 million years (>80 Ma).
Scarp Retreat Model and Exposure History of 'Yellowknife Bay'
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This mosaic of images from the Mast Camera (Mastcam) instrument on NASA's Curiosity Mars rover shows a series of sedimentary deposits in the Glenelg area of Gale Crater, from a perspective in Yellowknife Bay looking toward west-northwest.
Erosion by Scarp Retreat in Gale Crater (Unannotated)
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This mosaic of images from the Mast Camera (Mastcam) instrument on NASA's Curiosity Mars rover shows a series of sedimentary deposits in the Glenelg area of Gale Crater, from a perspective in Yellowknife Bay looking toward west-northwest.
Erosion by Scarp Retreat in Gale Crater (Annotated)
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A rock in the Sheepbed mudstone deposit in the Yellowknife Bay area inside Gale Crater is the first rock on Mars ever to be dated by laboratory analysis of its ingredients.
Measuring the Age of a Rock on Mars
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This illustration depicts a concept for the possible extent of an ancient lake inside Gale Crater.
Possible Extent of Ancient Lake in Gale Crater, Mars
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This mosaic of images from Curiosity's Mast Camera (Mastcam) shows geological members of the Yellowknife Bay formation, and the sites where Curiosity drilled into the lowest-lying member, called Sheepbed, at targets "John Klein" and "Cumberland."
View of Yellowknife Bay Formation, with Drilling Sites (Unannotated)
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Measurements with the MSL Radiation Assessment Detector (RAD) on NASA's Curiosity Mars rover during the flight to Mars and now on the surface of Mars enable an estimate of the radiation astronauts would be exposed to on an expedition to Mars.
Radiation Exposure Comparisons with Mars Trip Calculation
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The Radiation Assessment Detector (RAD) instrument on NASA's Curiosity Mars rover monitors the natural radiation environment at the surface of Mars.
Radiation Measurements on Mars
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This image graphs four gases released ("evolved") when powdered rock from the target rock "Cumberland" was heated inside the Sample Analysis at Mars (SAM) instrument suite on NASA's Curiosity Mars rover.
Volatiles Released by Heating Sample Powder from Martian Rock "Cumberland"
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Clay minerals are composed of layers. Water and cations (positive-charged ions) can be stored between these layers.
Clay Mineral Structure Similar to Clays Observed in Mudstone on Mars
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Images of locations in Gale Crater taken from orbit around Mars reveal evidence of erosion in recent geological times and development of small scarps, or vertical surfaces.
Erosion Patterns May Guide Mars Rover to Rocks Recently Exposed
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This mosaic of images from Curiosity's Mast Camera (Mastcam) shows geological members of the Yellowknife Bay formation, and the sites where Curiosity drilled into the lowest-lying member, called Sheepbed, at targets "John Klein" and "Cumberland."
View of Yellowknife Bay Formation, with Drilling Sites
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The hole that NASA's Curiosity Mars rover drilled into target rock "John Klein" provided a view into the interior of the rock, as well as obtaining a sample of powdered material from the rock.
View into 'John Klein' Drill Hole in Martian Mudstone
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This graph shows a spectrum recorded by the Chemistry and Camera instrument (ChemCam) in NASA's Curiosity Mars rover.
ChemCam Spectrum from Martian Rock Target 'Ithaca'
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The rock "Ithaca" shown here, with a rougher lower texture and smoother texture on top, appears to be a piece of the local sedimentary bedrock protruding from the surrounding soil in Gale Crater.
Target Rock 'Ithaca' in Gale Crater, Mars
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Since landing on Mars in August 2012, NASA's Curiosity Mars rover has fired the laser on its Chemistry and Camera (ChemCam) instrument more than 100,000 times at rock and soil targets up to about 23 feet (7 meters) away.
Target for 100,000th Laser Shot by Curiosity on Mars
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The rock "Ithaca" shown here, with a rougher lower texture and smoother texture on top, appears to be a piece of the local sedimentary bedrock protruding from the surrounding soil in Gale Crater.
Target Rock 'Ithaca' in Gale Crater, Mars, Unannotated
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NASA's Mars Exploration Rover Opportunity has been working on Mars since landing inside Eagle Crater on Jan. 25, 2004 (Universal Time; evening of Jan. 24, Pacific Standard Time).
Opportunity's Journey, Approaching 10th Anniversary
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After driving uphill about 139 feet (42.5 meters) during the 3,485th Martian day, or sol, of its work on Mars (Nov. 12, 2013), NASA's Mars Exploration Rover Opportunity captured this image with its navigation camera
Tracks of a Climb on Opportunity's Sol 3485
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Comets are giant snowballs in space made of ice, frozen gases, rocks, and dust.
ISON Streaks Toward the Sun
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